Bolt-anchor.



No. 731,560. 1 PATEN'I'ED JUNE 23, 1903.. D. M. FIELD.

BOLT ANCHOR.

APPLIOATION FILED SEPT. 19. 1902.

N0 MODEL.

CUM Dem UNITED STATES Patented June 23, 1903.

' DELUE M. FIELD, OF DANVERS, ILLINOIS.

BOLT-ANCHOR.

SPECIFICATION forming part of Letters Patent No. 731,560, dated June 23, 1903. Application filed September 19, 1902. Serial No. 124,020. (No model-) To all whom it may concern:

Be it known that I, DELUE M. FIELD, a citizen of the United States, residing at Danvers, in the county of McLean and State of Illinois, have invented certain new and useful Improvements in Bolt-Anchors, of which the following is a specification.

My invention relates to improvements in bolt-anchors, and more especially to that class of bolt-anchors used for fixing screws or bolts in brickwork, masonry, or the like, in which screw-threads cannot be readily cut, or in securing wood, tile, or other facing to walls, the plastering of which would be injured by nails or screws. r

This invention has reference, moreover, to a bolt-anchor designed to be placed in' the masonry in the course of construction and located in the mortar, cement, or the like, between the bricks or stones, as contradistin guished from that class of bolt-anchors which are located in holes drilled in the masonry for the reception of the anchor.

The object of my invention is to produce a bolt-anchor of the above character which shall be simple, efficient, and inexpensive.

In order to more fully describe the nature and objects of my said invention, reference will be had to the accompanying drawings, in which Figure 1 represents a perspective view of one form of the bolt-anchorg Fig. 2, a fragmentary cross-section of the screw-threaded end thereof; Fig. 3, a top plan View of a modified form of bolt-anchor; and Fig. 4 represents a framentary View of a corner of brickwork or masonry, showing the screw-threaded end on the bolt-anchor embedded in the mortar, cement, or the like.

Similar letters refer to similar parts throughout the several views.

The form of my invention shown in Figs. 1 and 2 consists of a main stem or shank a, tapped at one end, as at b, for the reception of a screw orbolt d, and provided at its other end with one or more retaining-arms c, preferably integral with the main stem of the anchor, and forming any desired angle therewith. The main stem a, as well as the retaining-arms, are preferably rectangular in cross-section and may be made of any desirable material, though preferably of'cast-iron. The stem or is slotted, as at 6, near its tapped end for the purpose of reducing the length of the screw-threaded portion. This slot, however, may, if desired, be omitted and the end made solid, as shown in Fig. 3. This boltanchor is designed especially for use in securing wood, tiles, or other facing to walls which would be injured by nails or screws, or into which nails or screws cannot conveniently be driven, and in using the anchor it is generally placed in the masonry while the same is in the course of construction and located in the mortar, cement, or the like between thestonos or bricks with its tapped endl flush with or extending just beyond the surface of the wall. The shank of the anchor, as the retaining-arms, being thus inclosed iii the mortar, cement, or the like will be held securely therein and prevented by the said arms from being pulled out as well as shaken laterally. The retaining-arms may form,with the main stem, any desired angle and may be so disposed as to conform to the inner contour of the walls For example, if the anchor is used on a chimney-corner the arms may form a right angle with each other when the anchor assumes the Y shape, (shown in Fig. 1,) or if used on a straight surface, as contradistinguished from a corner or curve, the anchor may be made T-shaped, as shown in Fig. 3, in both of which cases the arms may extend along the inner surface of the wall. The particular disposition of the anchor in the wall forms no part of my invention and may vary within wide limits. Furthermore, I do not wish to be understood as confining my invention to any of the special uses herein stated, as the same may be used for a great variety of different purposes.

The extreme simplicityof my invention, which is attained without the sacrifice of efficiency, renders it exceedingly inexpensive and easy of manufacture.

Having thus described my said invention, what I claim, and desire to secure by Letters Patent ofthe United States, is-

1. A bolt-anchor, comprising a main stem, screw-threaded at one end for the reception as well of a bolt or screw, and provided with one or more retaining-arms of substantially the same cross-section as said stem, as herein described.

2. A bolt-anchor, comprising a main stem, screw-threaded at one end for the reception of a bolt or screw, and fixed retaining-arms formed integral with the other end of said stem and extending laterally therefrom, substantially as described.

3. A bolt-anchor, comprising a main stem slotted near one end, screw-threaded interiorly from its outer end to said slot, for the reception of a bolt or screw, and provided with fixed integral retaining-arms, substantially as described.

4. A bolt-anchor, comprising a Y-shaped piece of metal, screw-threaded at the end of the main stem for the reception of a bolt or screw, substantially as described.

5. A bolt-anchor, comprising a Y-shaped piece of metal, screw-threaded at the end of the main stem for the reception of a bolt or screw, and provided with a slot at said end communicating with said screw-threaded portion, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

DELUE M. FIELD.

Witnesses:

LoU1s STREBLE, OSCAR SEBASTIAN. 

